Keygraphs for Sign Detection in Indoor Environments by Mobile Phones. - Henrique Morimitsu; Marcelo Hashimoto; Rodrigo B. Pimentel; Roberto M. Cesar; Roberto Hirata Jr. (GbRPR, 2011)

Wi-Fi and keygraphs for localization with cell phones. - Henrique Morimitsu; Rodrigo B. Pimentel; Marcelo Hashimoto; Roberto M. Cesar; Roberto Hirata Jr. (ICCV Workshops, 2011)